ensuring the survival of the infantry. In September 1966, 105th Field Battery was replaced by 101st Field Battery and returned to Australia. In May 1967, the Regiment completed its first tour of duty in Vietnam and was replaced by 4th Field Regiment, Royal Australian Artillery. The Regiment, rejoined by 105th Field Battery, relocated to Sanananda Barracks, Wacol. The 103rd Field Battery was re-roled as a medium battery and moved to 12th Medium Regiment. In February 1969, 105th Field Battery returned to Vietnam for a second tour of duty to be followed by the remainder of the Regiment a month later. On completion of their final tour of duty, the Regiment returned to Sanananda Barracks, Wacol in March 1970. Post Vietnam In February 1983, the Regiment was relocated to its current base at Barce Lines, Gallipoli Barracks, Enoggera. In November 1985, the Regiment was integrated with the Army Reserve resulting in the re-raising of 104th Field Battery as an Army Reserve battery on 8 November 1985. As part of the restructuring of the Army (RTA) program, 1st Field Regiment took command of 13th Field Battery on 1 May 1997 and amalgamated with 11th Field Regiment on 15 June 1997. As part of the RTA motorised Battalion trial, 101st Field Battery, to be known as Fire Support Company, was placed under command of 6 RAR on 1 July 1997. In November 1999, Fire Support Company 6 RAR was disbanded, with the former 101st Field Battery members joining 105th Field Battery in anticipation of deployment on operations in East Timor. Although the entire sub-unit did not deploy to East Timor with 6 RAR Battalion Group in April 2000, many 1st Field Regiment members did deploy to East Timor with various units and distinguished themselves during their operational tour. In January 2011 the Australian Regular Army field regiments were reorganised in preparation for re-equipment with new guns and battle management systems to each contain three observation post batteries, supported by a single gun battery equipped with 12 guns. As part of this reorganisation the regiments were renamed, with the word "field" removed from their title. Under the new structure each regiment is capable of providing a brigade-level Joint Fires and Effects Coordination Centre (JFEEC) and every observation post battery provides a battle group JFECC as well as three combat team joint fires teams. Every gun battery now comprises three troops of 155 mm towed